Re: gas smell, bad idle, smoke from steering colum
Sounds like it's time to stop driving it until you can give it a thorough once-over. If you haven't done so, do a basic tune (plugs, wires, cap, rotor), replace vac lines and pcv valves, air filter, oil and filter. Do a compression check when you change the plugs just so you have a good base-line for the future.... if you can do a leak-down test, do that as well.
Get ANY oil or gas leak fixed before you drive it.... these things get hot enough under the hood that you can be looking at a fire in an instant..